Over the last year we have been working with Dodson Motorsport to bring a stronger 4th gear to the market.  This is the weakest link to the transmission in our experiences and we have run this gear in several car that would not be possible with the factory 4th.   We used to do all dyno calibration in 4th gear, but changed to 5th gear a couple of years ago to give 4th gears as best of a chance as possible.  With the Dodson 4th, we have run 4th gear on dyno in torque levels approaching 1100wtq for science and the typical gear whine has not been seen.   We now offer this service, and per Dodson’s request, we will not be able to offer the gear separately.  Upgrade lead time is under a week in most cases, and we are taking orders immediately at this point.   If you have any questions, reach out to sales@irozmotorsport.com #irozmotorsport #audi #dodsonmotorsport #audirs3 #audiTTRS #audisport #dragrace #daza #carenthusiast